Eterm: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/Eterm - from package: eterm

You may install the required package with command apt-get install {package}
Error in other languages:
Eterm: bevel nie gevind nie
Eterm: comandă negăsită
Eterm: comando não encontrado
Eterm: commande introuvable
Eterm: command not found
Eterm: käsku ei ole
Eterm: không tìm thấy lệnh
Eterm: komanda nerasta
Eterm: Kommando nicht gefunden.
Eterm: kommandot finns inte
Eterm: komut yok
Eterm: nie znaleziono polecenia
Eterm: níor aimsíodh an t-ordú
Eterm: no se encontró la orden
Eterm: no s'ha trobat l'ordre
Eterm: opdracht niet gevonden
Eterm: parancs nem található
Eterm: perintah tidak ditemukan
Eterm: príkaz nenájdený
Eterm: příkaz nenalezen
Eterm: команда не найдена
Eterm: командата не е открита
Eterm: 命令找不到
Eterm: コマンドが見つかりません